Foods for Longevity: What Experts Eat to Age Healthily

What constitutes a healthy aging process? The question drives a vast amount of research and increasingly, the answer points not to a single “superfood” but to consistent dietary patterns. Longevity experts emphasize a variety of whole, minimally processed foods, with a strong foundation in plant-based options. Here’s a look at the foods these experts recommend, and what they suggest limiting, for a longer, healthier life.

Vegetables: A Cornerstone of Longevity

Across numerous studies examining diet and aging, vegetables consistently emerge as foundational. Dr. Marta Guasch-Ferré, adjunct associate professor at the Harvard T.H. Chan School of Public Health, points to vegetables – alongside fruits, whole grains, and vegetable oils – as being “associated with healthy aging, cognitive function, physical and mental health.” The common thread, she notes, is a plant-based approach, minimizing processed foods.

Dr. Zhaoli (Joy) Dai-Keller, an honorary senior lecturer at the University of Sydney, stresses the importance of frequency and variety. She recommends incorporating sufficient fruits and vegetables into every meal, from breakfast to dinner, whether cooked, blanched, or raw. Beyond fiber, these foods provide essential vitamins, minerals, and polyphenols with antioxidant and anti-inflammatory properties, potentially reducing cellular damage over time.

Fruits, Especially Berries

Fruit is another key component of longevity-focused diets, with berries receiving particular attention in research. Dr. Guasch-Ferré notes that berries have been associated with preventative benefits, particularly in studies of cognitive health. Dr. Dai-Keller suggests adding fresh or frozen fruit to yogurt to boost antioxidant vitamin, mineral, and polyphenol intake.

While blueberries are often highlighted, experts emphasize the importance of incorporating a range of seasonal or frozen fruits consistently, rather than focusing on a single option.

Beans and Lentils: Plant-Based Protein Powerhouses

Legumes – beans, split peas, and lentils – frequently appear in longevity research, featuring prominently in dietary patterns like the Mediterranean, DASH, and Okinawan diets. Dr. Valter Longo, Edna Jones Professor in gerontology at USC Leonard Davis School of Gerontology, highlights legumes as central to both his Longevity Diet and shorter-term fasting-mimicking plans, associating them with longevity and overall health.

Legumes also serve as important protein sources, particularly as people age and risk muscle loss. Dr. Guasch-Ferré points to these plant-based proteins as helpful in preventing this decline.

Nuts and Seeds: Healthy Fats and Protein

Nuts and seeds are another common element in diets linked to longevity, providing healthy fats and quality protein. Dr. Longo emphasizes the importance of protein quality, suggesting a combination of seeds, nuts, and legumes rather than relying solely on legumes for protein intake. Dr. Dai-Keller recommends adding chia seeds to yogurt for an extra boost of fiber, protein, and omega-3s.

Extra Virgin Olive Oil: A Versatile Health Booster

If there’s one ingredient longevity experts consistently recommend, it’s extra virgin olive oil. It has been associated with improvements in inflammation and cardiovascular health. Dr. Guasch-Ferré suggests swapping butter or other animal fats with olive oil as a simple way to improve health. It can be used in a variety of ways, from salad dressings to frying eggs and baking.

Whole Grains: Fiber and Metabolic Health

Whole grains – unlike refined grains – are consistently linked with better aging outcomes. They are a shared feature of dietary patterns associated with slower biological aging, supporting metabolic health, which becomes increasingly important with age, according to Dr. Dai-Keller.

Fish: Moderate Consumption for Added Benefits

While plant-based eating is central, fish often has a place, particularly in pescatarian approaches. Dr. Longo includes fish in his Longevity Diet, and Dr. Guasch-Ferré suggests moderate amounts of fish or eggs as part of a healthy protein approach in midlife.

Yogurt: A Simple and Nutritious Addition

For those seeking a simple dietary change, Dr. Dai-Keller recommends increasing yogurt consumption. It’s accessible, versatile, and can be paired with fruit and chia seeds for improved gut health, higher-quality protein, and added fiber. For older adults, she notes that protein-rich options like yogurt, tofu, and lentils can help prevent frailty.

Tofu and Soy: Plant-Based Protein Options

Soy foods, particularly tofu, are featured in both the dietary patterns of long-lived Okinawans and in Dr. Dai-Keller’s own cooking. She incorporates tofu into various dishes, emphasizing the importance of flavorful sauces to enhance its taste. Plant-based proteins like soy can help reduce reliance on red and processed meats.

What to Limit: Red Meat, Sugar, and Supplements

Just as important as what’s included in a healthy diet is what’s limited. Dr. Longo recommends minimizing or eliminating red and processed meat, consuming it no more than once a week if at all. Dr. Guasch-Ferré emphasizes restricting sugary foods and beverages. Dr. Dai-Keller is skeptical of supplements marketed as anti-aging fixes, citing limited evidence and regulation.

It’s the Pattern, Not a Single Superfood

All three researchers resist the idea of a single miracle ingredient. Dr. Guasch-Ferré emphasizes that it’s a combination of factors, with plant-forward, fiber-rich diets being the most effective. Dr. Dai-Keller and Dr. Guasch-Ferré both highlight the importance of sustainability and enjoyment, suggesting that dietary patterns should be something people can follow throughout their lives. Dietary habits should be enjoyable and connect people, contributing to overall well-being and longevity.

longevity isn’t found in a single food or supplement, but in consistent choices: vegetables drizzled with olive oil, beans simmered with spices, yogurt topped with fruit – repeated day after day, for decades.